SIMPLEX TRADING, LLC

CIK

1488542

Location

CHICAGO, IL

Portfolio Value

Mid $2,966,020,730

Diversification

Diversified

Filing Date

Global Rank

#1,077 / 8,826 ▼ 3 · as of Jun 2026

Top Industry

Semiconductors 14.3%

Period ended 36 days ago

Filed Nov 4, 2026 · 1d

27 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Unknown

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.

Style

Diversified active

Top 10 weight 38.4%, 36.5 effective positions, active share 55.0% against every 13F filer's combined book; it meets none of the index-like, systematic-like or concentrated tests

Turnover

High turnover

189.9% over the last four quarters (100%+)

Horizon

Medium horizon

Value-weighted holding period 4.4 quarters (4 to under 12)

Closest benchmark: every 13F filer's combined book, active share 55.0%; sector active share 18.8% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

2,662 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026

Top Position

16.1%

+4.4 pts

Top 5

33.4%

+4.1 pts

Top 10

41.3%

+2.9 pts

HHI

383

Diversified+108

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026

Sector	% Portfolio	Value	Positions
Unclassified	28.1%	$834,753,863	618
Technology	27.8%	$824,001,630	322
Consumer Cyclical	8.9%	$265,335,998	199
Healthcare	8.5%	$251,821,871	382
Financial Services	6.4%	$188,529,537	261
Industrials	4.9%	$145,276,703	280
Basic Materials	4.1%	$121,230,370	138
Communication Services	3.7%	$109,131,368	102
Energy	2.9%	$85,434,703	121
Consumer Defensive	2.6%	$77,536,977	87
Utilities	1.1%	$33,255,014	48
Real Estate	1.0%	$29,712,696	104

Last Quarter's Activity

Export CSV

Sep 30, 2026 vs Jun 30, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
TLT	iShares 20+ Year Treasury Bond ETF	+1,123,273	2,984,270	$232,116,520
NOK	Nokia Corp	+562,430	1,644,366	$16,673,871
GRAB	Grab Holdings Ltd	+350,341	759,656	$2,362,530
WULF	Terawulf Inc.	+302,798	457,926	$6,777,304
VALE	Vale S.A.	+276,439	493,473	$6,617,472
LUMN	Lumen Technologies, Inc.	+264,755	341,229	$1,910,882
PURR	Hyperliquid Strategies Inc	+261,679	386,218	$4,738,894
SPCE	Virgin Galactic Holdings, Inc	+261,598	356,577	$1,066,165
ONDS	Ondas Inc.	+261,152	403,044	$2,954,312
BSX	Boston Scientific Corp	+256,222	264,645	$11,551,754
QS	QuantumScape Corp	+243,457	504,362	$2,342,761
NIO	NIO Inc.	+226,752	1,134,510	$3,891,369
SQQQ	ProShares UltraPro Short QQQ	+209,622	238,032	$8,190,681
CIFR	Cipher Digital Inc.	+197,998	340,692	$5,391,450
ASTS	AST SpaceMobile, Inc.	+188,934	297,805	$17,528,802
GPRO	GoPro, Inc.	+180,031	580,119	$748,353
IOVA	Iovance Biotherapeutics, Inc.	+174,578	300,685	$4,456,151
SPDN	Direxion Daily S&P 500 Bear 1X Shares	+174,036	182,002	$1,543,376
TRIP	TripAdvisor, Inc.	+168,562	263,386	$2,204,540
CYPH	Cypherpunk Technologies Inc.	+166,876	171,303	$570,438
—		+161,817	531,598	$0
MAGS	Roundhill Magnificent Seven ETF	+145,948	155,328	$11,135,464
CMG	Chipotle Mexican Grill Inc	+141,468	223,309	$7,134,722
LBTYK	Liberty Global Ltd.	+141,467	194,516	$1,729,247
WMT	Walmart Inc.	+137,559	158,780	$16,500,417
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
PFE	Pfizer Inc	−530,550	110,427	$3,149,378
MPT	Medical Properties Trust Inc	−462,147	62,084	$214,810
NVDA	Nvidia Corp	−456,208	1,064,484	$243,106,855
KEEL	Keel Infrastructure Corp.	−425,285	941,332	$3,322,901
SOFI	SoFi Technologies, Inc.	−378,714	803,146	$12,625,455
USO	United States Oil Fund, LP	−372,338	118,399	$17,245,998
UAA	Under Armour, Inc.	−365,023	376,315	$1,678,364
SOXS	Direxion Daily Semiconductor Bear 3X Shares	−331,632	20,856	$689,916
OPEN	Opendoor Technologies Inc.	−298,390	462,831	$1,094,121
NOW	ServiceNow, Inc.	−284,622	7,186	$962,995
PATH	UiPath, Inc.	−267,050	111,288	$1,428,937
CMCSA	Comcast Corp	−266,773	103,255	$2,246,828
SBET	Sharplink, Inc.	−220,767	35,386	$328,382
IBIT	iShares Bitcoin Trust ETF	−198,319	4,859	$230,025
SILJ		−190,130	35,919	$979,870
USAR	USA Rare Earth, Inc.	−173,319	14,093	$198,429
NMRA	Neumora Therapeutics, Inc.	−171,309	28,501	$16,992
NASA	Tema Etfs LLC	−168,330	17,280	$0
GLL		−167,962	26,328	$656,357
OSCR	Oscar Health, Inc.	−166,794	158,715	$4,894,770
FCX	Freeport-Mcmoran Inc	−164,005	462,800	$32,396,000
PLTR	Palantir Technologies Inc.	−156,190	45,506	$8,511,897
UUUU	Energy Fuels Inc	−155,014	22,604	$249,322
RDW	Redwire Corp	−151,963	60,170	$628,174
CRON	Cronos Group Inc.	−150,982	72,746	$240,061
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
HYG	iShares iBoxx $ High Yield Corporate Bond ETF	1,017,542	$78,564,417
XLI	State Street(R) Industrial Select Sector SPDR(R) ETF	144,222	$24,082,189
EWZ	iShares MSCI Brazil ETF	510,468	$19,014,933
MUB	iShares National Muni Bond ETF	133,229	$13,469,451
MDB	MongoDB, Inc.	38,059	$13,267,747
CRCL	Circle Internet Group, Inc.	128,138	$10,529,099
BAC	Bank Of America Corp	186,454	$10,148,691
UBER	Uber Technologies, Inc	133,693	$9,159,307
CSCO	Cisco Systems, Inc.	78,688	$8,469,189
ECHO	EchoStar CORP	90,396	$8,082,306
NU	Nu Holdings Ltd.	532,962	$6,747,298
OXY	Occidental Petroleum Corp	101,358	$5,607,124
INTC	Intel Corp	44,933	$5,402,294
BNY	Bank of New York Mellon Corp	32,947	$4,765,124
ETHA	iShares Ethereum Trust ETF	206,907	$4,162,968
BHP	BHP Group Ltd	48,232	$4,092,002
NVTS	Navitas Semiconductor Corp	350,122	$4,064,916
MPC	Marathon Petroleum Corp	9,492	$3,753,326
ADBE	Adobe Inc.	14,999	$3,598,860
CME	Cme Group Inc.	13,600	$3,562,928
NFLX	Netflix Inc	50,429	$3,508,849
ETSY	Etsy Inc	47,662	$3,407,356
EPD	Enterprise Products Partners L.P.	95,277	$3,392,813
NVO	Novo Nordisk A S	85,735	$3,250,213
BABA	Alibaba Group Holding Ltd	29,985	$3,224,586
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
GOOGL	Alphabet Inc.	368,241	$131,598,286
TSLA	Tesla, Inc.	150,665	$63,369,699
MU	Micron Technology Inc	52,682	$60,810,305
SPY	Spdr S&P 500 ETF Trust	53,496	$39,949,207
META	Meta Platforms, Inc.	60,293	$33,962,443
AVGO	Broadcom Inc.	84,040	$31,746,110
AMAT	Applied Materials Inc	32,303	$23,355,069
AMD	Advanced Micro Devices Inc	36,092	$20,966,203
QCOM	Qualcomm Inc	93,992	$17,368,781
GE	General Electric Co	37,191	$13,899,392
LOW	Lowes Companies Inc	56,496	$12,456,803
LITE	Lumentum Holdings Inc.	12,958	$11,118,741
TMUS	T-Mobile US, Inc.	64,753	$10,861,020
SNDK	Sandisk Corp	4,518	$10,272,712
MO	Altria Group, Inc.	135,419	$9,743,397
DIA	Spdr Dow Jones Industrial Average ETF Trust	16,391	$8,562,494
ABT	Abbott Laboratories	91,699	$8,320,767
KORU	Direxion Daily MSCI South Korea Bull 3X Shares	8,585	$6,707,889
XLY	State Street(R) Consumer Discretionary Select Sector SPDR(R) ETF	52,381	$6,143,243
TEVA	Teva Pharmaceutical Industries Ltd	174,409	$5,908,976
DASH	DoorDash, Inc.	29,297	$5,406,175
F	Ford Motor Co	383,462	$5,330,121
PANW	Palo Alto Networks Inc	14,905	$5,082,903
GWW	W.W. Grainger, Inc.	3,641	$4,953,216
EWJ	iShares MSCI Japan ETF	48,127	$4,488,805
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

2,662 tracked positions · $2,966,020,730 total · filing declares 10,469 positions · $183,823,872,854 · as of Sep 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 2,662 positions by value · page 1 of 54

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
NVDA	Nvidia Corp Technology	Reduced	1,064,484	-456,208	$243,106,855	−20.1%	8.20%
TLT	iShares 20+ Year Treasury Bond ETF	Added	2,984,270	+1,123,273	$232,116,520	+44.3%	7.83%
IWM	iShares Russell 2000 ETF	Reduced	492,550	-44,260	$136,874,719	−15.1%	4.61%
AMZN	Amazon Com Inc Consumer Cyclical	Added	508,815	+103,617	$126,771,257	+31.3%	4.27%
ORCL	Oracle Corp Technology	Added	586,290	+18,998	$80,497,617	−3.2%	2.71%
HYG	iShares iBoxx $ High Yield Corporate Bond ETF	NEW	1,017,542	NEW	$78,564,417	NEW	2.65%
AAPL	Apple Inc. Technology	Reduced	192,718	-66,831	$64,178,948	−14.5%	2.16%
MSFT	Microsoft Corp Technology	Reduced	101,122	-96,406	$51,865,473	−29.6%	1.75%
GLD	Spdr Gold Trust	Added	129,431	+52,954	$49,292,502	+75.0%	1.66%
ASML	Asml Holding NV Technology	Added	20,828	+4,422	$37,733,462	+15.6%	1.27%
FCX	Freeport-Mcmoran Inc Basic Materials	Reduced	462,800	-164,005	$32,396,000	−17.8%	1.09%
SOXL	Direxion Daily Semiconductor Bull 3X Shares	Added	198,348	+60,201	$29,327,735	−20.4%	0.99%
CI	Cigna Group Healthcare	Added	94,149	+60,825	$25,592,522	+178.6%	0.86%
XLI	State Street(R) Industrial Select Sector SPDR(R) ETF	NEW	144,222	NEW	$24,082,189	NEW	0.81%
C	Citigroup Inc Financial Services	Added	157,546	+129,617	$20,399,056	+421.9%	0.69%
XLK	State Street(R) Technology Select Sector SPDR(R) ETF	Added	103,760	+70,971	$20,311,020	+225.1%	0.68%
GEV	GE Vernova Inc. Industrials	Added	20,878	+526	$19,844,330	−17.0%	0.67%
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	Reduced	41,859	-105,548	$19,095,657	−72.9%	0.64%
EWZ	iShares MSCI Brazil ETF	NEW	510,468	NEW	$19,014,933	NEW	0.64%
ASTS	AST SpaceMobile, Inc. Technology	Added	297,805	+188,934	$17,528,802	+81.2%	0.59%
USO	United States Oil Fund, LP	Reduced	118,399	-372,338	$17,245,998	−67.0%	0.58%
MRVL	Marvell Technology, Inc. Technology	Reduced	63,598	-31,070	$16,803,227	−40.4%	0.57%
NOK	Nokia Corp Technology	Added	1,644,366	+562,430	$16,673,871	+16.0%	0.56%
WMT	Walmart Inc. Consumer Defensive	Added	158,780	+137,559	$16,500,417	+586.5%	0.56%
QQQ	Invesco Qqq Trust, Series 1	Added	21,532	+8,932	$15,928,727	+71.7%	0.54%
CHTR	Charter Communications, Inc. Communication Services	Added	142,877	+38,150	$15,845,059	+6.4%	0.53%
FBTC	Fidelity Wise Origin Bitcoin Fund	Added	211,625	+88,187	$15,372,440	+143.9%	0.52%
GOOG	Alphabet Inc. Communication Services	Reduced	43,794	-103,893	$14,922,367	−71.4%	0.50%
BKNG	Booking Holdings Inc. Consumer Cyclical	Added	89,669	+22,119	$14,607,976	+21.3%	0.49%
VST	Vistra Corp. Utilities	Added	102,539	+46,037	$14,186,270	+58.3%	0.48%
URA	Global X Uranium ETF	Added	348,989	+61,223	$13,907,211	+10.6%	0.47%
XLU	State Street(R) Utilities Select Sector SPDR(R) ETF	Added	343,512	+110,086	$13,548,113	+28.0%	0.46%
MUB	iShares National Muni Bond ETF	NEW	133,229	NEW	$13,469,451	NEW	0.45%
MDB	MongoDB, Inc. Technology	NEW	38,059	NEW	$13,267,747	NEW	0.45%
COST	Costco Wholesale Corp Consumer Defensive	Added	14,309	+3,148	$13,026,055	+24.8%	0.44%
SOFI	SoFi Technologies, Inc. Financial Services	Reduced	803,146	-378,714	$12,625,455	−40.4%	0.43%
B	Barrick Mining Corp Basic Materials	Added	300,976	+133,527	$12,240,693	+99.0%	0.41%
BSX	Boston Scientific Corp Healthcare	Added	264,645	+256,222	$11,551,754	+3113.3%	0.39%
HOOD	Robinhood Markets, Inc. Financial Services	Added	99,101	+34,650	$11,148,862	+72.5%	0.38%
MAGS	Roundhill Magnificent Seven ETF	Added	155,328	+145,948	$11,135,464	+1746.3%	0.38%
CRCL	Circle Internet Group, Inc. Financial Services	NEW	128,138	NEW	$10,529,099	NEW	0.35%
BMY	Bristol Myers Squibb Co Healthcare	Added	166,646	+66,461	$10,398,710	+80.1%	0.35%
BAC	Bank Of America Corp Financial Services	NEW	186,454	NEW	$10,148,691	NEW	0.34%
WDC	Western Digital Corp Technology	Added	20,836	+9,406	$9,469,128	+29.7%	0.32%
UNH	Unitedhealth Group Inc Healthcare	Reduced	24,956	-40,923	$9,160,848	−66.5%	0.31%
UBER	Uber Technologies, Inc Technology	NEW	133,693	NEW	$9,159,307	NEW	0.31%
CRL	Charles River Laboratories International, Inc. Healthcare	Added	30,359	+11,163	$8,956,208	+105.7%	0.30%
JNJ	Johnson & Johnson Healthcare	Added	33,287	+19,890	$8,812,400	+159.0%	0.30%
NBIS	Nebius Group N.V. Communication Services	Added	37,034	+17,231	$8,735,579	+59.7%	0.29%
PLTR	Palantir Technologies Inc. Technology	Reduced	45,506	-156,190	$8,511,897	−63.8%	0.29%

Showing the top 50 of 2,662 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.